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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.MastodonAPI.StatusController do
   6   use Pleroma.Web, :controller
   7
   8   import Pleroma.Web.ControllerHelper,
   9     only: [try_render: 3, add_link_headers: 2]
  10
  11   require Ecto.Query
  12
  13   alias Pleroma.Activity
  14   alias Pleroma.Bookmark
  15   alias Pleroma.Object
  16   alias Pleroma.Repo
  17   alias Pleroma.ScheduledActivity
  18   alias Pleroma.User
  19   alias Pleroma.Web.ActivityPub.ActivityPub
  20   alias Pleroma.Web.ActivityPub.Visibility
  21   alias Pleroma.Web.CommonAPI
  22   alias Pleroma.Web.MastodonAPI.AccountView
  23   alias Pleroma.Web.MastodonAPI.ScheduledActivityView
  24   alias Pleroma.Web.Plugs.OAuthScopesPlug
  25   alias Pleroma.Web.Plugs.RateLimiter
  26
  27   plug(Pleroma.Web.ApiSpec.CastAndValidate)
  28
  29   plug(
  30     :skip_plug,
  31     Pleroma.Web.Plugs.EnsurePublicOrAuthenticatedPlug when action in [:index, :show]
  32   )
  33
  34   @unauthenticated_access %{fallback: :proceed_unauthenticated, scopes: []}
  35
  36   plug(
  37     OAuthScopesPlug,
  38     %{@unauthenticated_access | scopes: ["read:statuses"]}
  39     when action in [
  40            :index,
  41            :show,
  42            :card,
  43            :context
  44          ]
  45   )
  46
  47   plug(
  48     OAuthScopesPlug,
  49     %{scopes: ["write:statuses"]}
  50     when action in [
  51            :create,
  52            :delete,
  53            :reblog,
  54            :unreblog
  55          ]
  56   )
  57
  58   plug(OAuthScopesPlug, %{scopes: ["read:favourites"]} when action == :favourites)
  59
  60   plug(
  61     OAuthScopesPlug,
  62     %{scopes: ["write:favourites"]} when action in [:favourite, :unfavourite]
  63   )
  64
  65   plug(
  66     OAuthScopesPlug,
  67     %{scopes: ["write:mutes"]} when action in [:mute_conversation, :unmute_conversation]
  68   )
  69
  70   plug(
  71     OAuthScopesPlug,
  72     %{@unauthenticated_access | scopes: ["read:accounts"]}
  73     when action in [:favourited_by, :reblogged_by]
  74   )
  75
  76   plug(OAuthScopesPlug, %{scopes: ["write:accounts"]} when action in [:pin, :unpin])
  77
  78   # Note: scope not present in Mastodon: read:bookmarks
  79   plug(OAuthScopesPlug, %{scopes: ["read:bookmarks"]} when action == :bookmarks)
  80
  81   # Note: scope not present in Mastodon: write:bookmarks
  82   plug(
  83     OAuthScopesPlug,
  84     %{scopes: ["write:bookmarks"]} when action in [:bookmark, :unbookmark]
  85   )
  86
  87   @rate_limited_status_actions ~w(reblog unreblog favourite unfavourite create delete)a
  88
  89   plug(
  90     RateLimiter,
  91     [name: :status_id_action, bucket_name: "status_id_action:reblog_unreblog", params: [:id]]
  92     when action in ~w(reblog unreblog)a
  93   )
  94
  95   plug(
  96     RateLimiter,
  97     [name: :status_id_action, bucket_name: "status_id_action:fav_unfav", params: [:id]]
  98     when action in ~w(favourite unfavourite)a
  99   )
 100
 101   plug(RateLimiter, [name: :statuses_actions] when action in @rate_limited_status_actions)
 102
 103   action_fallback(Pleroma.Web.MastodonAPI.FallbackController)
 104
 105   defdelegate open_api_operation(action), to: Pleroma.Web.ApiSpec.StatusOperation
 106
 107   @doc """
 108   GET `/api/v1/statuses?ids[]=1&ids[]=2`
 109
 110   `ids` query param is required
 111   """
 112   def index(%{assigns: %{user: user}} = conn, %{ids: ids} = params) do
 113     limit = 100
 114
 115     activities =
 116       ids
 117       |> Enum.take(limit)
 118       |> Activity.all_by_ids_with_object()
 119       |> Enum.filter(&Visibility.visible_for_user?(&1, user))
 120
 121     render(conn, "index.json",
 122       activities: activities,
 123       for: user,
 124       as: :activity,
 125       with_muted: Map.get(params, :with_muted, false)
 126     )
 127   end
 128
 129   @doc """
 130   POST /api/v1/statuses
 131   """
 132   # Creates a scheduled status when `scheduled_at` param is present and it's far enough
 133   def create(
 134         %{
 135           assigns: %{user: user},
 136           body_params: %{status: _, scheduled_at: scheduled_at} = params
 137         } = conn,
 138         _
 139       )
 140       when not is_nil(scheduled_at) do
 141     params = Map.put(params, :in_reply_to_status_id, params[:in_reply_to_id])
 142
 143     attrs = %{
 144       params: Map.new(params, fn {key, value} -> {to_string(key), value} end),
 145       scheduled_at: scheduled_at
 146     }
 147
 148     with {:far_enough, true} <- {:far_enough, ScheduledActivity.far_enough?(scheduled_at)},
 149          {:ok, scheduled_activity} <- ScheduledActivity.create(user, attrs) do
 150       conn
 151       |> put_view(ScheduledActivityView)
 152       |> render("show.json", scheduled_activity: scheduled_activity)
 153     else
 154       {:far_enough, _} ->
 155         params = Map.drop(params, [:scheduled_at])
 156         create(%Plug.Conn{conn | body_params: params}, %{})
 157
 158       error ->
 159         error
 160     end
 161   end
 162
 163   # Creates a regular status
 164   def create(%{assigns: %{user: user}, body_params: %{status: _} = params} = conn, _) do
 165     params = Map.put(params, :in_reply_to_status_id, params[:in_reply_to_id])
 166
 167     with {:ok, activity} <- CommonAPI.post(user, params) do
 168       try_render(conn, "show.json",
 169         activity: activity,
 170         for: user,
 171         as: :activity,
 172         with_direct_conversation_id: true
 173       )
 174     else
 175       {:error, {:reject, message}} ->
 176         conn
 177         |> put_status(:unprocessable_entity)
 178         |> json(%{error: message})
 179
 180       {:error, message} ->
 181         conn
 182         |> put_status(:unprocessable_entity)
 183         |> json(%{error: message})
 184     end
 185   end
 186
 187   def create(%{assigns: %{user: _user}, body_params: %{media_ids: _} = params} = conn, _) do
 188     params = Map.put(params, :status, "")
 189     create(%Plug.Conn{conn | body_params: params}, %{})
 190   end
 191
 192   @doc "GET /api/v1/statuses/:id"
 193   def show(%{assigns: %{user: user}} = conn, %{id: id} = params) do
 194     with %Activity{} = activity <- Activity.get_by_id_with_object(id),
 195          true <- Visibility.visible_for_user?(activity, user) do
 196       try_render(conn, "show.json",
 197         activity: activity,
 198         for: user,
 199         with_direct_conversation_id: true,
 200         with_muted: Map.get(params, :with_muted, false)
 201       )
 202     else
 203       _ -> {:error, :not_found}
 204     end
 205   end
 206
 207   @doc "DELETE /api/v1/statuses/:id"
 208   def delete(%{assigns: %{user: user}} = conn, %{id: id}) do
 209     with %Activity{} = activity <- Activity.get_by_id_with_object(id),
 210          {:ok, %Activity{}} <- CommonAPI.delete(id, user) do
 211       try_render(conn, "show.json",
 212         activity: activity,
 213         for: user,
 214         with_direct_conversation_id: true,
 215         with_source: true
 216       )
 217     else
 218       _e -> {:error, :not_found}
 219     end
 220   end
 221
 222   @doc "POST /api/v1/statuses/:id/reblog"
 223   def reblog(%{assigns: %{user: user}, body_params: params} = conn, %{id: ap_id_or_id}) do
 224     with {:ok, announce} <- CommonAPI.repeat(ap_id_or_id, user, params),
 225          %Activity{} = announce <- Activity.normalize(announce.data) do
 226       try_render(conn, "show.json", %{activity: announce, for: user, as: :activity})
 227     end
 228   end
 229
 230   @doc "POST /api/v1/statuses/:id/unreblog"
 231   def unreblog(%{assigns: %{user: user}} = conn, %{id: activity_id}) do
 232     with {:ok, _unannounce} <- CommonAPI.unrepeat(activity_id, user),
 233          %Activity{} = activity <- Activity.get_by_id(activity_id) do
 234       try_render(conn, "show.json", %{activity: activity, for: user, as: :activity})
 235     end
 236   end
 237
 238   @doc "POST /api/v1/statuses/:id/favourite"
 239   def favourite(%{assigns: %{user: user}} = conn, %{id: activity_id}) do
 240     with {:ok, _fav} <- CommonAPI.favorite(user, activity_id),
 241          %Activity{} = activity <- Activity.get_by_id(activity_id) do
 242       try_render(conn, "show.json", activity: activity, for: user, as: :activity)
 243     end
 244   end
 245
 246   @doc "POST /api/v1/statuses/:id/unfavourite"
 247   def unfavourite(%{assigns: %{user: user}} = conn, %{id: activity_id}) do
 248     with {:ok, _unfav} <- CommonAPI.unfavorite(activity_id, user),
 249          %Activity{} = activity <- Activity.get_by_id(activity_id) do
 250       try_render(conn, "show.json", activity: activity, for: user, as: :activity)
 251     end
 252   end
 253
 254   @doc "POST /api/v1/statuses/:id/pin"
 255   def pin(%{assigns: %{user: user}} = conn, %{id: ap_id_or_id}) do
 256     with {:ok, activity} <- CommonAPI.pin(ap_id_or_id, user) do
 257       try_render(conn, "show.json", activity: activity, for: user, as: :activity)
 258     end
 259   end
 260
 261   @doc "POST /api/v1/statuses/:id/unpin"
 262   def unpin(%{assigns: %{user: user}} = conn, %{id: ap_id_or_id}) do
 263     with {:ok, activity} <- CommonAPI.unpin(ap_id_or_id, user) do
 264       try_render(conn, "show.json", activity: activity, for: user, as: :activity)
 265     end
 266   end
 267
 268   @doc "POST /api/v1/statuses/:id/bookmark"
 269   def bookmark(%{assigns: %{user: user}} = conn, %{id: id}) do
 270     with %Activity{} = activity <- Activity.get_by_id_with_object(id),
 271          %User{} = user <- User.get_cached_by_nickname(user.nickname),
 272          true <- Visibility.visible_for_user?(activity, user),
 273          {:ok, _bookmark} <- Bookmark.create(user.id, activity.id) do
 274       try_render(conn, "show.json", activity: activity, for: user, as: :activity)
 275     end
 276   end
 277
 278   @doc "POST /api/v1/statuses/:id/unbookmark"
 279   def unbookmark(%{assigns: %{user: user}} = conn, %{id: id}) do
 280     with %Activity{} = activity <- Activity.get_by_id_with_object(id),
 281          %User{} = user <- User.get_cached_by_nickname(user.nickname),
 282          true <- Visibility.visible_for_user?(activity, user),
 283          {:ok, _bookmark} <- Bookmark.destroy(user.id, activity.id) do
 284       try_render(conn, "show.json", activity: activity, for: user, as: :activity)
 285     end
 286   end
 287
 288   @doc "POST /api/v1/statuses/:id/mute"
 289   def mute_conversation(%{assigns: %{user: user}, body_params: params} = conn, %{id: id}) do
 290     with %Activity{} = activity <- Activity.get_by_id(id),
 291          {:ok, activity} <- CommonAPI.add_mute(user, activity, params) do
 292       try_render(conn, "show.json", activity: activity, for: user, as: :activity)
 293     end
 294   end
 295
 296   @doc "POST /api/v1/statuses/:id/unmute"
 297   def unmute_conversation(%{assigns: %{user: user}} = conn, %{id: id}) do
 298     with %Activity{} = activity <- Activity.get_by_id(id),
 299          {:ok, activity} <- CommonAPI.remove_mute(user, activity) do
 300       try_render(conn, "show.json", activity: activity, for: user, as: :activity)
 301     end
 302   end
 303
 304   @doc "GET /api/v1/statuses/:id/card"
 305   @deprecated "https://github.com/tootsuite/mastodon/pull/11213"
 306   def card(%{assigns: %{user: user}} = conn, %{id: status_id}) do
 307     with %Activity{} = activity <- Activity.get_by_id(status_id),
 308          true <- Visibility.visible_for_user?(activity, user) do
 309       data = Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity)
 310       render(conn, "card.json", data)
 311     else
 312       _ -> render_error(conn, :not_found, "Record not found")
 313     end
 314   end
 315
 316   @doc "GET /api/v1/statuses/:id/favourited_by"
 317   def favourited_by(%{assigns: %{user: user}} = conn, %{id: id}) do
 318     with true <- Pleroma.Config.get([:instance, :show_reactions]),
 319          %Activity{} = activity <- Activity.get_by_id_with_object(id),
 320          {:visible, true} <- {:visible, Visibility.visible_for_user?(activity, user)},
 321          %Object{data: %{"likes" => likes}} <- Object.normalize(activity, fetch: false) do
 322       users =
 323         User
 324         |> Ecto.Query.where([u], u.ap_id in ^likes)
 325         |> Repo.all()
 326         |> Enum.filter(&(not User.blocks?(user, &1)))
 327
 328       conn
 329       |> put_view(AccountView)
 330       |> render("index.json", for: user, users: users, as: :user)
 331     else
 332       {:visible, false} -> {:error, :not_found}
 333       _ -> json(conn, [])
 334     end
 335   end
 336
 337   @doc "GET /api/v1/statuses/:id/reblogged_by"
 338   def reblogged_by(%{assigns: %{user: user}} = conn, %{id: id}) do
 339     with %Activity{} = activity <- Activity.get_by_id_with_object(id),
 340          {:visible, true} <- {:visible, Visibility.visible_for_user?(activity, user)},
 341          %Object{data: %{"announcements" => announces, "id" => ap_id}} <-
 342            Object.normalize(activity, fetch: false) do
 343       announces =
 344         "Announce"
 345         |> Activity.Queries.by_type()
 346         |> Ecto.Query.where([a], a.actor in ^announces)
 347         # this is to use the index
 348         |> Activity.Queries.by_object_id(ap_id)
 349         |> Repo.all()
 350         |> Enum.filter(&Visibility.visible_for_user?(&1, user))
 351         |> Enum.map(& &1.actor)
 352         |> Enum.uniq()
 353
 354       users =
 355         User
 356         |> Ecto.Query.where([u], u.ap_id in ^announces)
 357         |> Repo.all()
 358         |> Enum.filter(&(not User.blocks?(user, &1)))
 359
 360       conn
 361       |> put_view(AccountView)
 362       |> render("index.json", for: user, users: users, as: :user)
 363     else
 364       {:visible, false} -> {:error, :not_found}
 365       _ -> json(conn, [])
 366     end
 367   end
 368
 369   @doc "GET /api/v1/statuses/:id/context"
 370   def context(%{assigns: %{user: user}} = conn, %{id: id}) do
 371     with %Activity{} = activity <- Activity.get_by_id(id) do
 372       activities =
 373         ActivityPub.fetch_activities_for_context(activity.data["context"], %{
 374           blocking_user: user,
 375           user: user,
 376           exclude_id: activity.id
 377         })
 378
 379       render(conn, "context.json", activity: activity, activities: activities, user: user)
 380     end
 381   end
 382
 383   @doc "GET /api/v1/favourites"
 384   def favourites(%{assigns: %{user: %User{} = user}} = conn, params) do
 385     activities = ActivityPub.fetch_favourites(user, params)
 386
 387     conn
 388     |> add_link_headers(activities)
 389     |> render("index.json",
 390       activities: activities,
 391       for: user,
 392       as: :activity
 393     )
 394   end
 395
 396   @doc "GET /api/v1/bookmarks"
 397   def bookmarks(%{assigns: %{user: user}} = conn, params) do
 398     user = User.get_cached_by_id(user.id)
 399
 400     bookmarks =
 401       user.id
 402       |> Bookmark.for_user_query()
 403       |> Pleroma.Pagination.fetch_paginated(params)
 404
 405     activities =
 406       bookmarks
 407       |> Enum.map(fn b -> Map.put(b.activity, :bookmark, Map.delete(b, :activity)) end)
 408
 409     conn
 410     |> add_link_headers(bookmarks)
 411     |> render("index.json",
 412       activities: activities,
 413       for: user,
 414       as: :activity
 415     )
 416   end
 417 end